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https://reviews.apache.org/r/40778/
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Review request for Ambari, Robert Nettleton and Sumit Mohanty.


Bugs: AMBARI-12688
    https://issues.apache.org/jira/browse/AMBARI-12688


Repository: ambari


Description
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an another fix was submitted and reverted earlier. see: 
https://reviews.apache.org/r/37294/

note: host roles are merged from the blueprint and cluster object. -> I did 
this only specific cases. (e.g.: a component is missing from the cluster object 
but exists in the blueprint etc.)


Diffs
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  ambari-server/src/main/java/org/apache/ambari/server/utils/StageUtils.java 
3da0fe2 
  
ambari-server/src/test/java/org/apache/ambari/server/utils/StageUtilsTest.java 
e85d9a1 

Diff: https://reviews.apache.org/r/40778/diff/


Testing
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FT: tried on HA cluster (with e.g. metrics service, where host mappings not 
available during provisioning), move NN, then cluster info had the right hosts. 
Unit Testing is in progress...


Thanks,

Oliver Szabo

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